« previous next »
Pages: [1]   Go Down

Author Topic: CB550 oversize piston ring source?  (Read 844 times)

0 Members and 1 Guest are viewing this topic.

Offline TheVet

  • Full Member
  • *
  • Posts: 25
CB550 oversize piston ring source?
« on: April 03, 2021, 07:05:28 PM »
Anybody have a good source for extra rings?  Broke the damn middle ring on #3 trying to get the cylinders down tonight and all I'm seeing around short of an entire piston kit are standard size rings.  Working with 0.5 overbore (59mm) pistons from Cruzinimage. 
Logged
'74 CB550 "Pile o' Parts" (in progress)
'71 CB350 "Project Cafe" (done)
'06 Daytona 675 "Genesis" (track bike)

Offline caluser2000

  • Hot Shot
  • ***
  • Posts: 433
Re: CB550 oversize piston ring source?
« Reply #1 on: April 03, 2021, 10:22:52 PM »
Quote from: TheVet on April 03, 2021, 07:05:28 PM
Anybody have a good source for extra rings?  Broke the damn middle ring on #3 trying to get the cylinders down tonight and all I'm seeing around short of an entire piston kit are standard size rings.  Working with 0.5 overbore (59mm) pistons from Cruzinimage.
Did you ask Cruznimage if they can get  at least a single piston set from their supplier?
Logged
Every time you set your ass on a bike, you're playing a game of Russian Roulette between yourself and your own stupidity."

Offline PeWe

  • Really Old Timer ...
  • *******
  • Posts: 16,459
  • Bike almost back to the 70's 2015
Re: CB550 oversize piston ring source?
« Reply #2 on: April 03, 2021, 10:23:38 PM »
Chance is low if someone here bought extra rings with their kit.
This is the ring, right?
https://www.cruzinimage.net/2017/09/12/honda-cb500f-cb500k-553cc-bigbore-piston-ring/
Too easy to snap a ring or bend an oil rail.
Logged
CB750 K6-76  970cc (Earlier 1005cc JMR Billet block on the shelf waiting for a comeback)
CB750 K2-75 Parts assembled to a stock K2

Updates of the CB750 K6 -1976
http://forums.sohc4.net/index.php/topic,180468.msg2092136.html#msg2092136
The billet block build thread
http://forums.sohc4.net/index.php/topic,49438.msg1863571.html#msg1863571
CB750 K2 -1975  build thread
http://forums.sohc4.net/index.php/topic,168243.msg1948381.html#msg1948381
K2 engine build thread. For a complete CB750 -75
http://forums.sohc4.net/index.php/topic,180088.msg2088008.html#msg2088008
Carb jetting, a long story Mikuni TMR32
http://forums.sohc4.net/index.php/topic,179479.msg2104967.html#msg2104967

Offline caluser2000

  • Hot Shot
  • ***
  • Posts: 433
Re: CB550 oversize piston ring source?
« Reply #3 on: April 03, 2021, 10:46:31 PM »
Quote from: PeWe on April 03, 2021, 10:23:38 PM
Chance is low if someone here bought extra rings with their kit.
This is the ring, right?
https://www.cruzinimage.net/2017/09/12/honda-cb500f-cb500k-553cc-bigbore-piston-ring/
Too easy to snap a ring or bend an oil rail.
Yeau. I use hose clamps to hold the in when dropping the block down onto the pistons. You reall onlly need 2 but I prefer to use 4.
Logged
Every time you set your ass on a bike, you're playing a game of Russian Roulette between yourself and your own stupidity."

Offline TheVet

  • Full Member
  • *
  • Posts: 25
Re: CB550 oversize piston ring source?
« Reply #4 on: April 04, 2021, 03:25:27 PM »
Nice!  Did not know cruzin had a standalone store, thought he was Ebay only...  Not jazzed about shipping from Japan since I'm at a standstill until the rings come, but at least they're available.

Found some 59mm rings from Dynoman (right down the road in Austin), not sure if rings are fairly universal and could be used or are they more proprietary to each piston manufacturer?
« Last Edit: April 04, 2021, 03:33:08 PM by TheVet »
Logged
'74 CB550 "Pile o' Parts" (in progress)
'71 CB350 "Project Cafe" (done)
'06 Daytona 675 "Genesis" (track bike)

Offline bryanj

  • Really Old Timer ...
  • *******
  • Posts: 14,979
  • CB500 Number 1000036
Re: CB550 oversize piston ring source?
« Reply #5 on: April 04, 2021, 03:32:51 PM »
That kit is 550 +0.5 rings and pistons so maybe Dave Silver or elswhere has Honda ones, will be dearer but quicker
Logged
Semi Geriatric ex-Honda mechanic and MOT tester (UK version of annual inspection). Garage full of "projects" mostly 500/4 from pre 73 (no road tax in UK).

Remember "Its always in the last place you look" COURSE IT IS YOU STOP LOOKIN THEN!

Offline PeWe

  • Really Old Timer ...
  • *******
  • Posts: 16,459
  • Bike almost back to the 70's 2015
Re: CB550 oversize piston ring source?
« Reply #6 on: April 05, 2021, 12:42:34 AM »
cruzinimage.net is much better than eBay!

Quick support and adjustment of shipping after you have paid with refund. Happened me every time.
The clutch fibers for CB750 work fine. I guess they are OK for other bikes too.
Logged
CB750 K6-76  970cc (Earlier 1005cc JMR Billet block on the shelf waiting for a comeback)
CB750 K2-75 Parts assembled to a stock K2

Updates of the CB750 K6 -1976
http://forums.sohc4.net/index.php/topic,180468.msg2092136.html#msg2092136
The billet block build thread
http://forums.sohc4.net/index.php/topic,49438.msg1863571.html#msg1863571
CB750 K2 -1975  build thread
http://forums.sohc4.net/index.php/topic,168243.msg1948381.html#msg1948381
K2 engine build thread. For a complete CB750 -75
http://forums.sohc4.net/index.php/topic,180088.msg2088008.html#msg2088008
Carb jetting, a long story Mikuni TMR32
http://forums.sohc4.net/index.php/topic,179479.msg2104967.html#msg2104967

Offline TheVet

  • Full Member
  • *
  • Posts: 25
Re: CB550 oversize piston ring source?
« Reply #7 on: April 05, 2021, 05:59:03 PM »
Dynoman CS confirmed that their 59mm rings will NOT fit, for reference.  Will have to wait out shipping from CruzinImage  :-\
Logged
'74 CB550 "Pile o' Parts" (in progress)
'71 CB350 "Project Cafe" (done)
'06 Daytona 675 "Genesis" (track bike)
Pages: [1]   Go Up
« previous next »